Means for and method of restoring worn packing lands



May 30, 1933. R G MOODY 1,911,460

MEANS FOR AND METHOD OF RESTORING WORN PACKING LANDS Filed July 22, 1931[0 l (a a (v 7 /7 7 7 7 E 13. F494 F 5 F496 Eg E. 6. Mooov INVENTORATTORNEY Patented May 30, 1933 i UNITED STATES RALPH G. MOODY OF THEUE'I TED STATES'NAVY MEANS FOR AND METHOD OF BESTQRING WORN PACKINGLANDS Application filed July 22,

1931. Serial No. 552,409.

(GRANTED UNDER THE ACT or MARCH 3,1 1883; As AMENDED APRIL 30, 1928; 370G. 757) My invention relates broadly to a packing tool and moreparticularly to a tool for repairing the lands of dummy and labyrinthpacking, and its method of use.

An object of the invention is to provide a tool for increasing theradial dimensions oflands of dummy and labyrinth packings. Anotherobject isto provide a tool having interchangeable rollers: whereby wornpacking lands may be restored to their original height by a rollingprocess. I

Vith the above and other objects in. view the invention consists in theconstruction, combination and arrangement of parts as will be describedmore fully hereinafter.

Reference is to be had to the accompanying drawing forming a part ofthis specification, in which like reference characters indicatecorresponding parts throughout the several views, and in which Figure 1is a side elevation of the assembled tool;

Figure 2 is an end view thereof;

Figures 3 to 7 show various designs of rollers used in the processpractised by my invention; and

Figures 8 to show various steps in the practice thereof;

7 Referring more particularly to the drawing, 1 and 2 indicaterespective sections of a packing tool handle that are held in adjustablerelationship with each other by screw-threaded bolts 3 or other suitableadjustable fastening elements, and between which shim material may beinserted to space them apart.' Should it be desired to separate thesections a distance greater than is permissible with shims, it may beaccomplished by stud-bolts 4 that pass through section 1 and abutagainst the other section. By turning bolts 4 inwardly and easing-offbolts 8, the handle sections may be separated the desired distance.Although the sections are separated by either shims or by the bolts,

they are always maintained parallel to each other. Recesses, indicatedby dotted lines in'Figure 1 as at 5, are provided in the cor respondingends of the sections to receive the shanks of rollers 6, shown 1nFigures 3 to 7 Each of the rollers is constructed with a circumferentialgroove 7 in its shank that registers with'a corresponding groove 8 inthe recess formed in each of the handle sections, whereby it is heldfree to rotate but is prevented from becoming disengaged from the recessby a pin 9passing transversely through the handle and-engaging in thealigned grooves. It is desirable that the headsorx'vorking ends of therollers be of 6 different shapes and sizes to accommodate the varioususes to which they may be put in drawing-out a worn land, several suchshapes and sizes being illustrated in the drawing, Should the land ofthe packing being re-drawn have one straight side, and a-curved side, acylindrical roll, is used against the former, and one of a different.de-

sign is used against the latter. Shouldthe 1 land, however, have auniform'cross-section, identical rolls are used on both sides.

The lands of labyrinth or dummypacking usually are composed of acomparatively softfmetal that will gradually wear away by use and leavea clearance between the land and the opposed surface of sufiicient sizeto materially-impair the efficiency of the pack-- ing. To restore apacking, the lands of which have become worn, has been a long, laboriousand expensive task, but by the use ofmyiinvention thelands may bequickly and easily restored to their original height, and with a minimumdanger of accidental damage to the land,

My invention accomplishes its purpose by a a rolling or burnishingmethod and may be performed either manually orfimechanically. A p'airofrollers, selected for the. particular task from a general stock ofassorted size and shape, amongothers being those'shown in the drawing,are inserted in the handle gasbeforegexplained, the -sections of whichare spaced apart so that the tool may be fitted overthe land tohere-drawn, as may be seen in Figures 8 to 10 wherein the lan isrepresented by 10. If, as before stated,

the landhas-one straight side," the rollers shown in Figure 3 is usedfor that side, and the rollers shown in the remaining Figures 4 "to 7,are used in. turnfor the. outer side. By 100 rolling the tool over theland, the enlarged head of the roller displaces a portion of the metalof the land, as illustrated in Figure 8. When a proper amount of metalhas thus been displaced, a roller with a larger head is substituted forthe one previously used and the operation repeated until the land hasthe appearance of that illustrated in Figure 9. The rolling operation iscontinued with rollers having in turn larger heads until the land isdrawn out to the desired length, after which the roller shown in Figure7 is substituted and the contour of the land further smoothed out asshown in Figure 10.

It will be understood that the above description and accompanyingdrawing comprehend only the generaland'preferred embodiment of myinvention and that various changes in details of construction,proportion and arrangement of parts may be resorted to Within the scopeof the appended claims .and'without sacrificing any of the advantages ofthe invention.

The invention described herein may be manufactured and used by or forthe Government of the United States for governmental purposes withoutthe payment to me of any royalty thereon.

liming described my invention, what I claim is:

1. A hand tool for restoring packing lands including in combination ahandle composed of separable sections adjustably connected andmaintained in parallelism, means for adjusting the sections, alongitudinally extending recess in one end of each of the sec tions,rollers mounted in the recesses and in longitudinal alignment with thehandle sections, and means rotatably securing the rollers therein.

2. A hand tool for restoring lands of worn labyrinth packing including apair of compressing rollers, a hand grip for each of the rollers, andmeans securing the rollers in the V handgrlps, said hand grips beingadjustable in parallelism and connected to form a unitary tool. I

3. A hand tool for restoring worn packinglands including a. handlecomposed of adjustable-sections, eachsection being provided with alongitudinal recess, rollers revolubly supported in the recesses inalignment withthe handle sections joined in parallel- :therein.

ism, and means for securing the rollers 4. A' hand tool for restoringworn packing lands including a handle composed of adjustable parallelsections, each section being provided with a longitudinal recess,rollers revolubly supported atone end only in the Y recesses whereby apiece of work may be admitted between the rollers at their free ends,

and means for securing the rollers in the recesses, said rollers havingtheir axes of rotation in longitudinal alignment with the reingprovidedwith a recess at one end thereof,

rollers mounted in the recesses and having their axes'of rotation inlongitudinal alignment with the sections and in parallelism with eachother, and means for securing the rollers therein;

6. A method of re-drawing tapered packing lands consisting of subjectinga small area of the lands to a pressure between rollers, extending thearea of rolling progressively towards the thinnest portion of the landincreasing the working areas of the rollers as the rolling processprogresses, and finally smoothing the whole area of the land. '7. Amethod of increasing the height of worn taperedpacking lands consistingin displacing by pressure a small area of the metal at the thickestportion of the land, smoothing out the displaced metal by rollers havingincreased working areas, continuing the displacing and smoothingoperationsalternately and progressively towards the thinnest portion ofthe land, and finally smoothing the whole area of the land.

RALPH G. MOODY.

